@mixin responsive($point) {
    @if $point == giant {
        @media (max-width: 80em) { @content; }
    }
    @else if $point == human {
        @media (max-width: 64em) { @content; }
    }
    @else if $point == midget {
        @media (max-width: 48em)  { @content; }
    }
}